Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add Community-Access/accessibility-agents --skill kb-markdown-accessibilitygit clone --depth 1 https://github.com/Community-Access/accessibility-agentsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/community-access/accessibility-agents/kb-markdown-accessibility)<a href="https://agentmods.dev/skills/community-access/accessibility-agents/kb-markdown-accessibility"><img src="https://agentmods.dev/badge/skills/community-access/accessibility-agents/kb-markdown-accessibility/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/community-access/accessibility-agents/kb-markdown-accessibility"><img src="https://agentmods.dev/badge/skills/community-access/accessibility-agents/kb-markdown-accessibility.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00047 | $0.04437 |
| Opus 5.5 | $0.00019 | $0.01775 |
| Sonnet 5.5 | $0.00009 | $0.00887 |
| Haiku 4.5 | $0.00005 | $0.00444 |
Grade A, and why
kb-markdown-accessibility scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 434 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Markdown Accessibility Skill
Reusable knowledge module for the markdown-a11y-assistant, markdown-scanner, and markdown-fixer skills. Provides pattern libraries, severity scoring, fix templates, emoji translation maps, diagram description templates, and GitHub anchor generation rules for comprehensive markdown accessibility auditing across 9 domains.
Domains Covered
- Descriptive Links (WCAG 2.4.4) - Ambiguous link text, bare URLs, repeated identical text
- Image Alt Text (WCAG 1.1.1) - Missing, empty, filename-as-alt, generic placeholders
- Heading Hierarchy (WCAG 1.3.1 / 2.4.6) - Skipped levels, multiple H1s, bold-as-heading
- Table Accessibility (WCAG 1.3.1) - Missing descriptions, empty headers, layout tables
- Emoji (WCAG 1.3.3 / Cognitive) - Remove-all, remove-decorative, translate, or leave-unchanged modes
- Mermaid and ASCII Diagrams (WCAG 1.1.1 / 1.3.1) - Replace with accessible text + collapsible source
- Em-Dash / En-Dash Normalization (Cognitive) - Normalize to
-or leave unchanged - Anchor Link Validation (WCAG 2.4.4) - Validate
#anchorlinks against actual headings - Plain Language and List Structure (Cognitive) - Emoji bullets, passive voice, sentence length
Severity Scoring
Each issue, with its severity, WCAG and auto-fix.
| Issue | Severity | WCAG | Auto-fix? |
|---|---|---|---|
| Image missing alt text | critical | 1.1.1 (A) | No - needs visual judgment |
| Mermaid diagram with no text alternative | critical | 1.1.1 (A) | Partial - simple diagrams auto-described; complex need human |
| ASCII diagram with no text description | critical | 1.1.1 (A) | Partial - flag and wrap; description needs human or auto-gen |
| Broken anchor link | serious | 2.4.4 (A) | No - confirm which end changes |
| Ambiguous link text ("here", "click here") | serious | 2.4.4 (A) | Yes - rewrite using surrounding context |
| Skipped heading level | serious | 1.3.1 (A) | Yes - interpolate missing level |
| Multiple H1s | serious | 1.3.1 (A) | Yes - demote all but first |
| Emoji in heading | moderate | Cognitive | Yes - remove or translate per preference |
| Consecutive emoji (2+) | moderate | 1.3.3 (A) | Yes - remove sequence or translate |
| Emoji used as bullet | moderate | 1.3.1 (A) | Yes - replace with - |
| Em-dash in prose | moderate | Cognitive | Yes - replace with - |
| Table without preceding description | moderate | 1.3.1 (A) | Yes - add one-sentence summary |
| Bold text used as heading | minor | 2.4.6 (AA) | Yes - convert to appropriate heading |
| Bare URL in prose | minor | 2.4.4 (A) | Yes - wrap with descriptive text |
| Emoji used for meaning, single inline | minor | 1.3.3 (A) | Conditional - remove-all: yes; remove-decorative: flag; translate: translate |
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 8d ago Changed · -3 lines 92dc3004de29
- 1mo ago First seen · 437 lines · 47 tokens per session scan A 47ee6e1a470a
kb-markdown-accessibility is a skill published in the GitHub repository Community-Access/accessibility-agents (435 stars, last pushed 7d ago), licensed MIT. It adds 47 tokens to every session and 4,437 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-23.
kb-markdown-accessibility compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| kb-markdown-accessibilityCommunity-Access/accessibility-agents | Skill | 435 | 7d ago | MIT | A | 47 | Claude Code, Codex |
| accessibilityericrisco/rsc-harness | Skill | 503 | 2d ago | MIT | A | 86 | Claude Code, Codex |
| Accessibility AuditorPramodDutta/qaskills | Skill | 245 | 3d ago | MIT | A | 32 | Claude Code, Codex |
| Accessibility A11y EnhancedPramodDutta/qaskills | Skill | 245 | 3d ago | MIT | A | 34 | Claude Code, Codex |
| accessibility-commercefinsilabs/awesome-ecommerce-skills | Skill | 63 | 14d ago | MIT | A | 33 | Claude Code, Codex |
| accessibility-expertpersonamanagmentlayer/pcl | Skill | 44 | 11d ago | Apache-2.0 | A | 98 | Claude Code |
| monochromevaneenige/monochrome-ui | Skill | 134 | 1mo ago | MIT | A | 97 | Claude Code, Codex |